first steps on refactor: a fledgling error handling function for normalization errors.
norm methods get own functions now; added chull, poly, and force functions
tinkering with plot.vowels arguments
first commit of refactor, most things working
reintegrated normalization functions, added heatmap
heatmap working
first pass at hull plotting
some progress on hulls, still not finalized
finished hulls
diphthong input checking
minor bugfix
fixed hull color spec when col.by.vowel
first commit of gitignore
added .gz and .Rhistory
fixed windows font issue
debugged pch.means
debugged polygon and pch.tokens
fix tabs and whitespace
implemented poly.fill
whitespace, version number